Operation Manual

R
the system detects that the windshield is not
fogged up when the air-conditioning system is
switched on.
R
the hood is closed.
R
the driver's door is closed and the driver's
seat belt is fastened.
i
All of the vehicle's systems remain active
when the engine is stopped automatically.
i
The HOLD function can also be activated if
the engine has been switched off automati-
cally. It is then not necessary to continue
applying the brakes during the automatic stop
phase. When you depress the accelerator
pedal, the engine starts automatically and the
braking effect of the HOLD function is deac-
tivated.
i
All vehicles (except Mercedes-AMG vehi-
cles): automatic engine switch-off can take
place a maximum of four times in a row (initial
stop, then three subsequent stops).
i
Mercedes-AMG vehicles: the number of
consecutive automatic engine switch-offs is
unlimited.
Automatic engine start
The engine starts automatically if:
R
you switch off the ECO start/stop function by
pressing the ECO button
R
in transmission position D or N the brake
pedal is released and the HOLD function is not
active
R
you depress the accelerator pedal
R
you engage reverse gear R
R
you move the transmission out of position P
R
you switch to drive program S, S+ or M
(Mercedes-AMG vehicles)
R
you unfasten your seat belt or open the driv-
er's door
R
the vehicle starts to roll
R
the brake system requires this
R
the temperature in the vehicle interior devi-
ates from the set range
R
the system detects moisture on the wind-
shield when the air-conditioning system is
switched on
R
the battery's condition of charge is too low
i
Shifting the transmission to position P does
not start the engine.
Deactivating or activating the ECO
start/stop function
All vehicles (except Mercedes-AMG vehi-
cles)
X
To deactivate: press ECO button :.
Indicator lamp ; goes out.
X
To activate: press ECO button :.
Indicator lamp ; lights up.
If indicator lamp ; is off, the ECO start/stop
function has been deactivated manually or as
the result of a malfunction. The engine will then
not be switched off automatically when the vehi-
cle stops.
Mercedes-AMG vehicles
X
To deactivate: in drive program C, press ECO
button :.
or
X
Switch to drive program S, S+ or M
(
Y page 139).
Indicator lamp ; goes out.
X
To activate: press ECO button :.
Indicator lamp ; lights up.
If drive program S, S+ or M is active, the auto-
matic transmission switches to drive program
C.
Driving
131
Driving and parking
Z